Arnold, MatthiasRaabe, NilsWied, Dominik2012-10-222012-10-222012-10-22http://hdl.handle.net/2003/2971710.17877/DE290R-7148We use a recently proposed fluctuation-type procedure for detecting breaks in spatial regions to distinguish between hard and soft areas of inhomogeneous mineral subsoil like additives, air pockets and adhesion. For a proper application, some refinements of the procedure are necessary. Both simulation evidence of the refinement and the application on the subsoil yield favorable results.enDiscussion Paper / SFB 823;44/2012change pointfluctuation testspatial correlationspatial order310330620working paper